geog Flashcards
line graphs
A line graph could be used to show the changes in a country’s employment structure over time.
bar charts
Bar charts show grouped data as rectangular bars, eg the number of tourists visiting a resort each month.
population pyramids
Population pyramids are bar charts that show how many people of different ages are living in a place or country. Population pyramids show the bars arranged sideways, rather than upwards.
histograms
Histograms are similar to bar charts, but they show frequencies rather than groups of data. A histogram could be used to show frequencies of earthquakes of each magnitude on the Richter scale.
pie charts
Pie charts show percentages as a circle, divided into segments. A pie chart could be used to show how students travel to school. Each piece of data is shown as a proportion of 360, because there are 360 degrees in a circle.
scatter graphs
Scatter graphs show relationships between two sets of data. Points are located using the x and y-axis. Sometimes these points are arranged in a pattern.
Proportional symbols
Proportional symbols can be added to maps or graphs to show information about different places.
pictograms
Pictograms are like bar charts, but they use small pictures or icons to show data instead of bars.
cross sections
Cross sections are line graphs that show a sideways view of a landscape. They can show features such as hills and valleys, or depths, such as the depth of a river
radial/radar graphs
Radial/radar graphs are sometimes called rose charts. They have a central point from which data radiates outwards.
choropleth maps
Choropleth maps show interval data (data that is linked, rather than data from different categories) as colours. They are shaded in using one colour, where the darker shades represent high numbers and the lighter shades represent low numbers.
isoline maps
Isoline maps show lines that join up areas or values that are equal.
dot map
Dot maps show information as individual dots on a map. Each dot might represent more than one of something.
Desire lines and flow lines
Desire and flow line maps show movements from one place to another:
flow lines show the exact path of movement
desire lines show a general direction of movement
Proportional symbols
Proportional symbols can be added to a map to show differences between places.